/* =============================================
   FONTS
   Syne        → display / títulos (--font-display)
   Inter       → body / UI       (--font-body)   — variable font
   JetBrains Mono → código / badges monoespaciados (--font-mono)
   ============================================= */
@import url("https://fonts.googleapis.com/css2?family=Syne:wght@600..800&family=Inter:wght@300..800&family=JetBrains+Mono:wght@400;700&display=swap");


/* =========================
   TOKENS / THEME
   ========================= */
:root{
  /* Fonts */
  --font-display: 'Syne', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Dark palette (values) */
  --bg: #050c12;
  --text-on-dark: rgba(210,235,248,0.92);
  --muted-on-dark: rgba(160,205,228,0.62);
  --border-on-dark: rgba(56,180,220,0.12);


  /* Light palette (values) */
  --surface: #f2f7fb;
  --surface2: #e8f2f8;
  --text-on-light: #08192a;
  --muted-on-light: #2e5470;
  --border-on-light: rgba(8,50,90,0.11);


  /* Brand — Engineering Blue / Deep Teal */
  --accent:  #0d6e94;   /* azul ingeniería profundo — modo claro, botones principales */
  --accent2: #10a8d0;   /* teal técnico — iconos, highlights, hover */
  --accent3: #007ab5;   /* azul intermedio — gradientes */


  /* Effects */
  --shadow: 0 16px 48px rgba(0,10,24,0.20);
  --shadow-soft: 0 8px 24px rgba(0,10,24,0.10);
  --radius: 16px;
  --radius-sm: 12px;
  --focus: 0 0 0 3px rgba(16,168,208,0.32);


  /* Layout */
  --container: 1100px;
  --gap: 18px;


  /* Motion */
  --ease-out: cubic-bezier(.2,.8,.2,1);
  --t-fast: 160ms;
  --t: 240ms;


  /* ===== Active theme variables (default: light) ===== */
  --page-text: var(--text-on-light);
  --page-muted: var(--muted-on-light);
  --page-border: var(--border-on-light);
  --page-bg-solid: var(--surface2);


  --glass-bg: rgba(255,255,255,0.68);
  --glass-bg-strong: rgba(232,242,248,0.86);


  --card-bg: rgba(255,255,255,0.75);
  --card-border: var(--border-on-light);


  --section-alt-bg: rgba(13,110,148,0.04);


  --chip-bg: rgba(16,168,208,0.07);
  --chip-border: rgba(13,110,148,0.26);
  --chip-text: var(--page-text);
  --chip-icon: var(--accent2);
}


body.theme-dark{
  --page-text: var(--text-on-dark);
  --page-muted: var(--muted-on-dark);
  --page-border: var(--border-on-dark);
  --page-bg-solid: var(--bg);


  --glass-bg: rgba(56,180,220,0.05);
  --glass-bg-strong: rgba(5,12,18,0.80);


  --card-bg: rgba(56,180,220,0.05);
  --card-border: var(--border-on-dark);


  --section-alt-bg: rgba(56,180,220,0.04);


  --chip-bg: rgba(56,180,220,0.07);
  --chip-border: rgba(56,180,220,0.15);
  --chip-text: var(--page-text);
}


/* =========================
   BASE
   ========================= */
*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }


body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--page-text);
  font-size: clamp(15px, 1.2vw, 16px);
  line-height: 1.5;
  background:
    radial-gradient(1200px 600px at 15% 8%,  rgba(13,110,148,0.08), transparent 55%),
    radial-gradient(900px  500px at 88% 22%, rgba(16,168,208,0.06), transparent 55%),
    var(--page-bg-solid);
}


body.theme-dark{
  background:
    radial-gradient(1200px 600px at 15% 8%,  rgba(13,110,148,0.22), transparent 55%),
    radial-gradient(900px  500px at 88% 22%, rgba(16,168,208,0.13), transparent 55%),
    var(--page-bg-solid);
}


img{ max-width: 100%; display: block; }


:focus-visible{
  outline: none;
  box-shadow: var(--focus);
}


.skip-link{
  position: absolute;
  left: -999px;
  top: 8px;
  background: #fff;
  color: #000;
  padding: 10px 12px;
  border-radius: 10px;
  z-index: 1000;
}
.skip-link:focus{ left: 12px; outline: none; }


/* =========================
   LAYOUT
   ========================= */
.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 18px;
}


.section{ padding: 72px 0; }
.section-alt{ background: var(--section-alt-bg); }


.section-dark{
  background:
    linear-gradient(180deg, rgba(13,110,148,0.12), transparent 60%),
    var(--bg);
  color: var(--text-on-dark);
}


/* =========================
   SECTION HEADERS
   ========================= */
.section-title{
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}


.section-subtitle{
  margin: 0 0 22px;
  color: var(--page-muted);
  text-transform: uppercase;
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.16em;
}


.section-dark .section-subtitle{ color: var(--muted-on-dark); }


/* =========================
   HEADER / NAV
   ========================= */
.site-header{
  position: sticky;
  top: 0;
  z-index: 200;
  backdrop-filter: blur(10px);
  background: var(--glass-bg-strong);
  border-bottom: 1px solid var(--page-border);
}


.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 0;
}


.brand{
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
}
.brand-mark{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
}
.brand-accent{ color: var(--accent2); }


/* ---- Nav links ---- */
.nav{
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav > a{
  text-decoration: none;
  color: inherit;
  padding: 6px 9px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
  transition: background var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}
.nav > a:hover{ background: rgba(13,110,148,0.08); }
body.theme-dark .nav > a:hover{ background: rgba(56,180,220,0.07); }


.nav > a.is-active{
  background: rgba(13,110,148,0.10);
  border: 1px solid rgba(16,168,208,0.30);
}
body.theme-dark .nav > a.is-active{
  background: rgba(56,180,220,0.09);
  border-color: rgba(56,180,220,0.18);
}


/* ========================
   DROPDOWN — Proyectos
   ======================== */
.nav-dropdown{
  position: relative;
}

.nav-dropdown-trigger{
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 9px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  transition:
    background var(--t-fast) var(--ease-out),
    color var(--t-fast) var(--ease-out);
}
.nav-dropdown-trigger:hover,
.nav-dropdown:hover .nav-dropdown-trigger{
  background: rgba(13,110,148,0.08);
}
body.theme-dark .nav-dropdown-trigger:hover,
body.theme-dark .nav-dropdown:hover .nav-dropdown-trigger{
  background: rgba(56,180,220,0.07);
}

.nav-dropdown-trigger[aria-expanded="true"]{
  background: rgba(13,110,148,0.10);
  color: var(--accent2);
}
body.theme-dark .nav-dropdown-trigger[aria-expanded="true"]{
  background: rgba(56,180,220,0.09);
  color: var(--accent2);
}

.nav-dropdown-arrow{
  font-size: 9px;
  opacity: 0.55;
  transition: transform var(--t-fast) var(--ease-out), opacity var(--t-fast) var(--ease-out);
}
.nav-dropdown-trigger[aria-expanded="true"] .nav-dropdown-arrow{
  transform: rotate(180deg);
  opacity: 1;
}

.nav-dropdown-menu{
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  min-width: 190px;
  list-style: none;
  margin: 0;
  padding: 6px;
  border-radius: 14px;
  border: 1px solid var(--page-border);
  background: var(--glass-bg-strong);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    0 4px 6px rgba(0,0,0,0.04),
    0 16px 48px rgba(0,0,0,0.14);
  z-index: 300;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(-6px);
  transition:
    opacity var(--t-fast) var(--ease-out),
    transform var(--t-fast) var(--ease-out),
    visibility 0s var(--t-fast);
}

.nav-dropdown-menu::before{
  content: '';
  position: absolute;
  top: -5px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 10px;
  height: 10px;
  background: var(--glass-bg-strong);
  border-top: 1px solid var(--page-border);
  border-left: 1px solid var(--page-border);
  border-radius: 2px 0 0 0;
}

.nav-dropdown-menu.is-open{
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
  transition:
    opacity var(--t-fast) var(--ease-out),
    transform var(--t-fast) var(--ease-out),
    visibility 0s 0s;
}

.nav-dropdown-menu li + li{
  margin-top: 2px;
}

.nav-dropdown-menu a{
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 9px;
  text-decoration: none;
  color: inherit;
  font-size: 13px;
  font-weight: 600;
  transition:
    background var(--t-fast) var(--ease-out),
    color var(--t-fast) var(--ease-out);
  position: relative;
}

.nav-dropdown-menu a:hover{
  background: rgba(13,110,148,0.08);
  color: var(--accent2);
}
body.theme-dark .nav-dropdown-menu a:hover{
  background: rgba(56,180,220,0.07);
  color: var(--accent2);
}

.nav-dropdown-menu a i{
  width: 15px;
  text-align: center;
  color: var(--accent2);
  flex-shrink: 0;
  opacity: 0.75;
  transition: opacity var(--t-fast) var(--ease-out);
}
.nav-dropdown-menu a:hover i{
  opacity: 1;
}

.nav-dropdown-menu li:last-child{
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px solid var(--page-border);
}


/* ========================
   LANG TOGGLE  ES | EN
   ======================== */
.lang-toggle{
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 4px 8px;
  border-radius: 10px;
  border: 1px solid var(--page-border);
  background: var(--glass-bg);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.lang-opt{
  background: none;
  border: none;
  cursor: pointer;
  color: var(--page-muted);
  padding: 2px 4px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: color var(--t-fast) var(--ease-out), background var(--t-fast) var(--ease-out);
}
.lang-opt.is-active{
  color: var(--accent2);
  background: rgba(16,168,208,0.10);
}
.lang-opt:hover:not(.is-active){
  color: var(--page-text);
}

.lang-sep{
  color: var(--page-muted);
  opacity: 0.4;
  user-select: none;
  font-size: 11px;
}


.header-actions{
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}


.icon-btn{
  border: 1px solid var(--page-border);
  background: var(--glass-bg);
  color: inherit;
  border-radius: 10px;
  padding: 7px 10px;
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease-out), box-shadow var(--t-fast) var(--ease-out);
}
.icon-btn:hover{ transform: translateY(-1px); box-shadow: var(--shadow-soft); }


.burger{ display: none; }


/* =========================
   HERO
   ========================= */
.hero{ padding-top: 52px; }


.hero-grid{
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: center;
}


.kicker{
  margin: 0 0 10px;
  color: var(--page-muted);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
}


.hero-title{
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
}
.hero-subtitle{
  margin: 0 0 18px;
  color: var(--page-muted);
  font-size: 16px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}


.cta-row{
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 18px 0 18px;
}


.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 12px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid var(--page-border);
  color: inherit;
  background: var(--glass-bg);
  transition: transform var(--t-fast) var(--ease-out), box-shadow var(--t-fast) var(--ease-out), filter var(--t-fast) var(--ease-out);
}
.btn:hover{
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}
.btn.primary{
  background: linear-gradient(135deg, var(--accent), var(--accent3));
  color: #fff;
  border-color: transparent;
}
.btn.primary:hover{ filter: brightness(1.08); }
.btn.ghost{ background: transparent; }


.btn.small{
  padding: 10px 12px;
  font-size: 14px;
  border-radius: 12px;
}


.social{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.social-link{
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px solid var(--page-border);
  background: var(--glass-bg);
  color: inherit;
  text-decoration: none;
  transition: transform var(--t-fast) var(--ease-out), box-shadow var(--t-fast) var(--ease-out);
}
.social-link:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}


.hero-card{
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  background: var(--glass-bg);
  padding: 16px;
  box-shadow: var(--shadow);
  transition: transform var(--t) var(--ease-out), box-shadow var(--t) var(--ease-out);
}
.hero-card:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}


.avatar{
  border-radius: 16px;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}


.mini{
  margin-top: 12px;
  display: grid;
  gap: 8px;
}
.mini-row{
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
}
.mini-label{ color: var(--page-muted); }


.link{ color: var(--accent2); text-decoration: none; }
.link:hover{ text-decoration: underline; }


/* =========================
   ABOUT / GENERIC CARDS
   ========================= */
.about-grid{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}


.card{
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  padding: 18px;
}


.card,
.project-card,
.skill{
  transition: transform var(--t) var(--ease-out), box-shadow var(--t) var(--ease-out), border-color var(--t) var(--ease-out);
}
.card:hover,
.project-card:hover,
.skill:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
  border-color: rgba(16,168,208,0.30);
}


.card-title{
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  display: flex;
  gap: 10px;
  align-items: center;
}


.lead{
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}


.muted{
  margin: 0;
  color: var(--page-muted);
  line-height: 1.65;
}


/* Map */
.map-embed{
  margin-top: 12px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.12);
  background: rgba(0,0,0,0.04);
  aspect-ratio: 16 / 10;
}
body.theme-dark .map-embed{
  border: 1px solid rgba(56,180,220,0.15);
  background: rgba(56,180,220,0.04);
}
.map-embed iframe{
  width: 100%;
  height: 100%;
  border: 0;
}


/* Chips / badges */
.chip{
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  margin: 6px 6px 0 0;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid var(--chip-border);
  background: var(--chip-bg);
  color: var(--chip-text);
}


.tags{ margin-top: 10px; }


.badge-tech{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  margin: 6px 6px 0 0;
  border-radius: 999px;
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 400;
  letter-spacing: 0.02em;
  border: 1px solid var(--page-border);
  background: var(--glass-bg);
  color: var(--page-text);
}


.badge-tech i{ color: var(--chip-icon); }


/* =========================
   PROJECTS
   ========================= */
.project-actions{
  margin-top: 16px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}


.project-actions .btn.small{
  flex: 1;
  min-width: 140px;
  max-width: 180px;
  justify-content: center;
}


.project-desc{ margin-bottom: 12px; }


.projects-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 18px;
}


.project-card{
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  padding: 16px;
  box-shadow: var(--shadow);
}


/* =========================
   SKILLS
   ========================= */
.skills{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}


.skill{
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  padding: 14px 16px;
}


.skill:hover .skill-bar{
  background: rgba(8,50,90,0.14);
}
body.theme-dark .skill:hover .skill-bar{
  background: rgba(56,180,220,0.14);
}


.skill-top{
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  font-weight: 700;
}
.skill-pct{
  color: var(--page-muted);
  font-family: var(--font-mono);
  font-weight: 700;
}


.skill-bar{
  height: 10px;
  border-radius: 999px;
  background: rgba(8,50,90,0.10);
  overflow: hidden;
}
body.theme-dark .skill-bar{ background: rgba(56,180,220,0.10); }


.skill-fill{
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  transition: width 900ms var(--ease-out);
}
.skill.is-visible .skill-fill{ width: calc(var(--level) * 1%); }


/* =========================
   TIMELINE
   ========================= */
.two-col{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}


.timeline{
  list-style: none;
  padding: 0;
  margin: 14px 0 0;
  display: grid;
  gap: 12px;
}


.timeline-item{
  padding: 12px;
  border-radius: 14px;
  border: 1px dashed var(--page-border);
}


.timeline-date{
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  color: var(--page-muted);
  margin-bottom: 6px;
}
.timeline-title{ font-family: var(--font-display); font-weight: 700; margin-bottom: 2px; }
.timeline-place{ color: var(--page-muted); font-size: 13px; margin-bottom: 8px; }
.timeline-desc{ color: var(--page-muted); line-height: 1.55; font-size: 14px; }


.badge{
  display: inline-flex;
  margin-top: 10px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(13,110,148,0.30);
  background: rgba(13,110,148,0.08);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.04em;
}

/* badge--current */
.badge--current{
  border-color: rgba(16,168,208,0.45);
  background: rgba(16,168,208,0.10);
  color: var(--accent2);
}

/* =========================
   Drone view / mapa
   ========================= */
.drone-grid{
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: var(--gap);
  align-items: stretch;
  margin-top: 18px;
}

.drone-viewer-card{
  padding: 12px;
  min-height: 520px;
}

.drone-viewer-card model-viewer{
  width: 100%;
  height: 100%;
  min-height: 460px;
  border-radius: 14px;
  --poster-color: transparent;
}

@media (max-width: 920px){
  .drone-grid{
    grid-template-columns: 1fr;
  }

  .drone-viewer-card{
    min-height: 420px;
  }

  .drone-viewer-card model-viewer{
    min-height: 360px;
  }
}


/* =========================
   HARDWARE — Layout Opción A
   ========================= */

.hw-card{
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  overflow: hidden;
  margin-bottom: 2rem;
  transition: box-shadow var(--t) var(--ease-out), border-color var(--t) var(--ease-out);
}
.hw-card:hover{
  box-shadow: var(--shadow-soft);
  border-color: rgba(16,168,208,0.26);
}

.hw-top{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.hw-info{
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid var(--card-border);
}

.hw-viewer{
  padding: 12px;
  min-height: 340px;
  background: var(--section-alt-bg);
}

.hw-viewer model-viewer{
  width: 100%;
  height: 100%;
  min-height: 300px;
  border-radius: 10px;
  --poster-color: transparent;
}

.hw-gallery{
  display: flex;
  gap: 10px;
  padding: 12px 22px;
  border-top: 1px solid var(--card-border);
  overflow-x: auto;
  scrollbar-width: thin;
  background: var(--section-alt-bg);
}

.hw-thumb{
  flex: 0 0 auto;
  width: 120px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out), box-shadow var(--t-fast) var(--ease-out);
  position: relative;
}
.hw-thumb img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--t) var(--ease-out);
}
.hw-thumb:hover{
  border-color: var(--accent2);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(16,168,208,0.20);
}
.hw-thumb:hover img{
  transform: scale(1.06);
}

.hw-thumb-label{
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.55);
  color: #fff;
  font-size: 10px;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border-radius: 999px;
  pointer-events: none;
  white-space: nowrap;
}

.hw-info .btn{
  align-self: flex-start;
  margin-top: 1rem;
}

/* ---- LIGHTBOX ---- */
.lb-overlay{
  display: none;
  position: fixed;
  inset: 0;
  z-index: 900;
  background: rgba(0,0,0,0.82);
  backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.lb-overlay.is-open{
  display: flex;
}
.lb-inner{
  position: relative;
  max-width: min(90vw, 1000px);
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lb-img{
  max-width: 100%;
  max-height: 85vh;
  border-radius: 12px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6);
  object-fit: contain;
  display: block;
}
.lb-close{
  position: absolute;
  top: -14px;
  right: -14px;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: var(--accent2);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 18px;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  transition: transform var(--t-fast) var(--ease-out);
}
.lb-close:hover{ transform: scale(1.1); }
.lb-caption{
  position: absolute;
  bottom: -32px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.75);
  font-size: 13px;
  font-family: var(--font-mono);
  white-space: nowrap;
}

@media (max-width: 720px){
  .hw-top{ grid-template-columns: 1fr; }
  .hw-info{ border-right: none; border-bottom: 1px solid var(--card-border); }
  .hw-viewer{ min-height: 260px; }
  .hw-thumb{ width: 100px; height: 68px; }
}


/* =========================
   DOCENCIA — Teaching section
   ========================= */

.teaching-featured{
  margin-bottom: 2rem;
}

.teaching-kicker{
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent2);
  font-family: var(--font-mono);
  font-weight: 700;
  margin: 0 0 8px;
}

.teaching-preview{
  background: var(--section-alt-bg);
  padding: 12px;
}
.teaching-preview-inner{
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--card-border);
}
.teaching-preview-bar{
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: var(--glass-bg-strong);
  border-bottom: 1px solid var(--card-border);
}
.tpb-dot{
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(16,168,208,0.22);
  flex-shrink: 0;
}
.tpb-url{
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--page-muted);
  letter-spacing: 0.02em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  text-align: center;
}

.teaching-grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 0;
}

.teaching-card{
  display: flex;
  flex-direction: column;
}

.teaching-card-header{
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.teaching-level{
  font-size: 10px;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--chip-border);
  background: var(--chip-bg);
  color: var(--page-muted);
}

.teaching-level--tfm{
  border-color: rgba(13,110,148,0.38);
  background: rgba(13,110,148,0.08);
  color: var(--accent2);
}

.teaching-card--featured{
  border-color: rgba(16,168,208,0.24);
  background: linear-gradient(
    145deg,
    rgba(13,110,148,0.05) 0%,
    var(--card-bg) 60%
  );
}
.teaching-card--featured:hover{
  border-color: rgba(16,168,208,0.48);
}

.teaching-private-note{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 1rem;
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--page-muted);
  border: 1px dashed var(--page-border);
  background: transparent;
  align-self: flex-start;
}
.teaching-private-note i{
  font-size: 11px;
  color: var(--accent2);
}

@media (max-width: 920px){
  .teaching-grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 600px){
  .teaching-grid{
    grid-template-columns: 1fr;
  }
  .teaching-preview{
    display: none;
  }
}


/* =========================
   CONTACT
   ========================= */
.contact-grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
}
.contact-card{
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 16px;
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
}
.contact-card:focus{ outline: none; box-shadow: var(--focus); }


.contact-title{ font-family: var(--font-display); font-weight: 700; margin-bottom: 4px; }
.contact-value{ color: var(--page-muted); font-size: 14px; }


/* =========================
   FOOTER
   ========================= */
.footer{
  margin-top: 22px;
  padding-top: 12px;
  border-top: 1px solid var(--page-border);
}


/* =========================
   A11Y / MOTION
   ========================= */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{
    animation: none !important;
    transition: none !important;
  }
}


/* =========================
   RESPONSIVE
   ========================= */
@media (max-width: 920px){
  .hero-grid{ grid-template-columns: 1fr; }
  .about-grid{ grid-template-columns: 1fr; }
  .two-col{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .skills{ grid-template-columns: 1fr; }
}


@media (max-width: 768px){
  .hero{ padding-top: 36px; }
  .hero-grid{ text-align: center; }
  .cta-row{ justify-content: center; }
  .social{ justify-content: center; }
  .mini-row{ justify-content: center; gap: 8px; }
}


@media (max-width: 820px){
  .burger{ display: inline-flex; }

  .nav{
    position: fixed;
    left: 18px;
    right: 18px;
    top: 64px;
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 12px;
    border-radius: 16px;
    border: 1px solid var(--page-border);
    background: rgba(232,242,248,0.94);
    box-shadow: var(--shadow);
  }
  body.theme-dark .nav{ background: rgba(5,12,18,0.94); }

  body.nav-open .nav{ display: flex; }

  .nav-dropdown-menu{
    position: static;
    transform: none !important;
    box-shadow: none;
    border: none;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    padding: 0 0 0 16px;
    min-width: unset;
    visibility: visible;
    opacity: 1;
    pointer-events: none;
    transition: none;
  }
  .nav-dropdown-menu::before{
    display: none;
  }
  .nav-dropdown-menu.is-open{
    pointer-events: auto;
    display: block;
  }
  .nav-dropdown-trigger{
    width: 100%;
    justify-content: space-between;
  }
}